US4249036A - Remote alarm installation - Google Patents

Remote alarm installation Download PDF

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Publication number
US4249036A
US4249036A US06/019,497 US1949779A US4249036A US 4249036 A US4249036 A US 4249036A US 1949779 A US1949779 A US 1949779A US 4249036 A US4249036 A US 4249036A
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United States
Prior art keywords
alarm signal
alarm
selector switch
remotely located
telephone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/019,497
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English (en)
Inventor
Manfred Kutzki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Berliner Bank AG
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Berliner Bank AG
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Filing date
Publication date
Application filed by Berliner Bank AG filed Critical Berliner Bank AG
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Publication of US4249036A publication Critical patent/US4249036A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems

Definitions

  • This invention relates to a remote alarm installation.
  • Remote alarm installations which have a local alarm signal emitter device the alarm signal from which can be fed via a telephone line to a reproduction device in a control room.
  • a local selector switch by which that end of the line can be switched over, in dependence upon the occurrence of the alarm signal, from a local telephone junction point on to the output from the local alarm signal emitter device.
  • a control room selector switch which switches the control room end of the line on to the control room reproduction device in dependence upon the transmitted alarm signal.
  • each local alarm signal emitter device has a supervisory contact, upon release of which a relay switches over the telephone line, if necessary cutting off a conversation which is at that moment in progress, from the local telephone junction point on to an alarm signal emitter which includes a magnetic recorder.
  • the alarm signal emitter also sends out an emergency call and selector pulses for making a connection to a control room and for triggering an alarm in the control room.
  • This remote alarm installation is suitable only for the transmission of one single predetermined alarm signal.
  • a magnetic recorder is a relatively cumbersome and costly device.
  • the alarm signal emitter device includes a tape recorder in which a magnetic tape circulates continuously. On the magnetic tape, alarm signals and stepping signals are recorded one after another. Recording stations are scanned in sequence by means of the stepping signals. If the recording station being scanned at any time is in operation because of an alarm situation, the output from the tape recorder is connected to the transmission line and the succeeding alarm signal, which is recorded on the tape and is associated with the recording station which is just being scanned, is transmitted to the control room.
  • This alarm installation is likewise relatively costly because of the special transmission line and the employment of the tape recorder. The tape recorder must be continuously in operation and therefore undergoes heavy wear.
  • the alarm signal can be fed via a telephone line to a reproduction device in a control room.
  • the alarm signal emitter device includes a turntable having a number of circular tracks having electrically conductive and non-conductive sections lying separately in the circumferential direction, which are scanned by sliding contacts associated with the individual circular tracks. Individual conductive sections are acted upon by d.c. and a high-frequency signal in dependence upon the position of angular rotation of the turntable, so that, in the scanning, blocks of high-frequency pulses and blocks of low-frequency selector pulses alternate with one another. The blocks of high-frequency pulses form an alarm signal.
  • only one recording station is associated with each telephone line, whilst the turntable and the sliding contacts undergo heavy wear.
  • An object of the present invention is to provide a remote alarm installation of the kind mentioned initially which relatively cheaply enables a plurality of recording stations to be supervised and alarm signals associated with each recording station to be transmitted over a single telephone line.
  • the local alarm signal emitter device in an alarm installation of that kind includes a multi-frequency generator having a number of frequency selection inputs each of which is acted upon by a respective alarm signal emitter; each multi-frequency alarm signal generated by the multi-frequency generator includes a generator identification and an alarm signal emitter identification; the control room selector switch connects the control room end of the line to the reproduction device upon receipt of a generator identification; and the reproduction device includes a translator for translation of the alarm signal into an associated optical and/or acoustic reproduction signal.
  • At least as many alarm signal emitters may be provided in the local alarm signal emitter device as the different frequencies which can be transmitted over the telephone line. If a different combination of differing frequencies is associated with each alarm signal emitter, the possible number in a given band width of the telephone line can be still further increased. Even in the case of simultaneous generation of a number of alarm signals these can be differentiated in the control room.
  • the multi-frequency generator can be constructed in a simple way to be static (i.e. without moving parts).
  • a commercial multi-frequency generator may be employed such as is used in telephone devices which work according to the multi-frequency selection method in which, in each case, at least two different frequencies are associated with the ten digits from which the calling numbers are formed.
  • multi-frequency generators enable the formation of up to sixteen different characters (digits, letters or other symbols) and are constructed using semiconductor techniques, frequently as integrated circuits.
  • Their application in this alarm installation has the advantage that in the control room which usually has exchange equipment as the selector switch no additional outlay has to be expended for the decoding of the generator identification and reversal of the selector switch in dependence upon the generator identification.
  • the local alarm signal emitter device may have at least one further multi-frequency generator.
  • Each local alarm signal emitter may be connected to a respective one of the frequency selection inputs of all of the multi-frequency generators, in which case, however, all of the local alarm signal emitters are connected separately to a different combination of frequency selection inputs.
  • the local end of the line may be connectable via the local selector switch to all of the multi-frequency generators one after another. In this way the number of available alarm signal emitters in the local alarm signal emitter device is raised to y x , where y is the number of frequency selection inputs to one multi-frequency generator and x is the number of multi-frequency generators.
  • the local selector switch may comprise a number of two-pole changeover switches, corresponding with the number of multi-frequency generators, connected in series, of which the switch section not connected in series with one of the other changeover switches is connected, in each case, to one of the multi-frequency generator outputs.
  • the local selector switch can be switched back to the local junction point in dependence upon an acknowledgement signal sent back from the control room.
  • the acknowledgement signal can simultaneously bring about the stepping on of the telephone line connection to further multi-frequency generator, and the necessary resettings.
  • the alarm signal from the local alarm signal emitter may be repeated if there is no acknowledgement signal. In this way it is achieved that in the event of an interruption of the connection to the control room because of a disturbance which occurs only briefly, a subsequently repeated alarm signal transmission reaches the correct place so that the connection is automatically restored.
  • the local selector switch connects the local end of the line on to the local alarm signal emitter device with a time delay.
  • the control room selector switch cuts off a junction point connected to the control room end of the line via the control room selector switch, in which case it is not a question of the reproduction device.
  • the response of a local alarm signal emitter can be reproducible locally optically and/or acoustically.
  • FIG. 1 is a block schematic diagram of a telephone network with an integrated alarm installation
  • FIGS. 2 and 3 show modifications of part of the alarm installation of FIG. 1.
  • a block 3 represents a control room of a bank system at a main bank, whilst blocks 4 represent local branch offices, of which there may be more than two. Each branch office 4 is connected to the control room 3 by a respective telephone line 5.
  • Each branch office 4 has a telephone arrangement 6, an alarm emitter device 7 and a selector switch 8.
  • the telephone arrangement 6 includes a number of telephones 9, 10 and 11 having dials and/or selector keyboards, a telephone 12 having a selector keyboard, and an exchange 14 for providing a connection between one of the telephones 9 to 12 and the telephone line 5, or a line 13 which is connected to the public telephone network. In this case the switching may be controllable from the telephone 12. However, the telephone arrangement 6 may include only one telephone.
  • the alarm emitter device 7 includes a multi-frequency generator 15 having fourteen frequency selection inputs E 1 to E 14 .
  • alarm emitters in the form of normally open contacts K 1 to K 14 , which in the case of appropriate wiring of the inputs with phase-inverter amplifiers may be replaced by normally closed contacts.
  • the contacts may, for example, be foot and/or hand-actuated touch contacts as well as glass breakage sensors, or fire, gas or moisture recorders.
  • a number of normally open contacts may be connected in parallel or a number of normally closed contacts in series, in order to increase the number of release or supervisory possibilities.
  • the multi-frequency generator 15 Upon actuation of an alarm emitter K 1 to K 14 the multi-frequency generator 15 generates an alarm signal at the output 16.
  • This indentification can be in the form of a mixed signal of two different frequencies in a code corresponding with the CCITT recommendation for a telephone selection system according to the multi-frequency method with key selection telephone apparatus. A table of associated frequencies is reproduced below.
  • the frequency selection input identification i.e. the frequency mixture, is then followed by a data end mark.
  • the multi-frequency generator 15 may also have further outputs A 1 to A 14 , each of which is associated with a respective one of the inputs E 1 to E 14 , and if an input, for example E 1 , is actuated can generate, only at the associated output A 1 , a signal which releases an optical alarm emitter K 1 .
  • Such optical alarm emitter or an acoustic alarm emitter, such as K 14 can be operated if the alarm emitters K 1 to K 14 on the input side do not give an optical or acoustic alarm on their own.
  • the selector switch 8 includes a relay having a contact 17 and an actuator circuit 18.
  • the actuator circuit includes a holding switching circuit, for example a flipflop, which triggers an integration circuit for the actuation of the contact 17, so that after cutting off the arrangement 6 from the local end of the telephone line 5 the contact 17 connects the line 5, only after a delay time of about 800 to 1000 milliseconds, to a delay member 19 which is connected to the output 16 from the multi-frequency generator 15.
  • the delay time of the delay member 19 is chosen to be somewhat longer than the delay time of the actuator circuit 18.
  • the switching over of the selector switch 8, i.e. of the contact 17, is triggered by an alarm signal at the output 16, and its restoration is triggered by an acknowledgement signal sent back over the telephone line 5 from the control room 3 after the receipt of the alarm signal.
  • the relatively long switchover period, during which the contact 17 cuts off the telephone line 5 from the local arrangement 6 but does not immediately connect it to the output from the delay member 19, ensures that a speech connection possibly existing between the branch office 4 and the control room 3 is interrupted and the exchange equipment in the control room 3 is set again in readiness for receipt of an alarm signal.
  • the acknowledgement signal may simultaneously bring about restoration of the local alarm signal emitter which has been released.
  • all of the telephone lines 5 are connected to a selector switch 20 which acts as the telephone exchange.
  • the telephone lines can be connected via the telephone exchange 20 at any time to one of a number of terminations such as telephone apparatus 21 or 22, a data processing installation 23, a magnetic recorder 24 or a reproduction device 25, in dependence upon either the dial tone transmitted over the telephone line or the prefix.
  • a connection to the reproduction device 25 is produced upon receipt of a multi-frequency generator identification.
  • the reproduction device 25 comprises a translator 26 which translates the information content of an alarm signal, fed to it from a branch office, into corresponding control signals for a cathode ray display unit 27 and/or a printer 28, so that on the screen of the display unit 27, or on the print-out from the printer 28, are reproduced the designation of the branch office 4 sending the alarm signal (multi-frequency generator identification), the kind of alarm signal (the particular multi-frequency generator input which is actuated) and, if the occasion arises, the date and time of day of the alarm.
  • a translator 26 which translates the information content of an alarm signal, fed to it from a branch office, into corresponding control signals for a cathode ray display unit 27 and/or a printer 28, so that on the screen of the display unit 27, or on the print-out from the printer 28, are reproduced the designation of the branch office 4 sending the alarm signal (multi-frequency generator identification), the kind of alarm signal (the particular multi-frequency generator input which is actuated) and, if the occasion arises, the date and
  • a storage arrangement included in the translator 26 ensures that, upon receipt of an alarm signal, the acknowledgement signal can be sent back very rapidly after, say, 1 to 2 seconds to the branch office in order to restore the selector switch 8 again for re-enabling transmission of a telephone conversation. However, adequate time remains for reproduction by the display unit 27 and the printer 28.
  • an acoustic alarm emitter (not shown) may also be released in the control room for actuation by the display unit 27 and printer 28.
  • the multi-frequency generator 15 may be made in such a way that it repeats the alarm signal one or more times, and the selector switch 8 returns automatically into the starting position, after the expiry of a predetermined holding time, in the event that the acknowledgement signal is still absent.
  • the prefix starts with a character A to D which does not exist on the keyboard of a key selection telephone.
  • FIG. 2 illustrates a modification of the part of the alarm installation contained in the branch office 4 for a larger number n of alarm signal emitters K 1 to K n .
  • three similar multi-frequency generators 15 are used.
  • the alarm signal emitters are connected to the inputs E 1 to E 14 of each multi-frequency generator 15 via a respective decoupling diode, so that with each alarm signal emitter there is associated another combination or group from one input of each of the multi-frequency generators 15.
  • the alarm signals from the multi-frequency generators 15 must be fed to the telephone line 5 one after another in order to ensure clear decoding in the control room 3.
  • the selector switch 8' is made as a rotary selector switch in which the contact 17 is connected to the outputs 16 from the multi-frequency generators 15 in sequence via respective delay members 19, 19' and 19". After receipt of the acknowledgement signal from the control room 3 the contact 17 is switched back again to the junction point 6.
  • the delay times to the delay members 19 to 19" amount, in each case, to more than double the delay time of the preceding delay member, in order to ensure that the alarm signals from the multi-frequency generators 15 are transmitted one after another and not simultaneously.
  • the switching-over of at least the first multi-frequency generator 15 in the switching sequence on to the telephone line 5 is effected with the same delay as in the case of the embodiment of FIG. 1.
  • the actuation circuit 18' is made in such a way that upon obtaining an alarm signal from one of the multi-frequency generators it starts stepwise forward switching of the contact 17.
  • the circuit may contain a pulse generator which, upon receipt of an alarm signal generates three stepping pulses, the instants of occurrence of which are determined according to the delay times of the delay members 19 to 19".
  • the translation of the alarm signals from the three multi-frequency generators 15 in the translator 26 in the control room for the formation of the necessary control signals is controlled in time in conformity with the local transmission.
  • FIG. 3 shows another modification of the alarm installation for a number of multi-frequency generators 15, the control of which is effected just as in FIG. 2, but for simplification of the figure is not illustrated therein.
  • the selector switch 8" contains a number of selector switches 8 connected in series, which are made just as in the embodiment of FIG. 1 and are connected in each case to one of the outputs 16 from the multi-frequency generators 15.
  • the changeover contacts 17 all adopt, simultaneously, the position opposite to that illustrated.
  • the control room end of the telephone line 5 is consequently connected only to the output 16 of the multi-frequency generator 15 at the bottom in FIG. 3, so that only its alarm signal is transmitted into the control room.
  • the selector switch 8 at the bottom in FIG. 3, or its changeover contact 17 switches back into the position illustrated, so that now only the central multi-frequency generator 15 is connected to the telephone line 5.
  • the acknowledgement signal brings about resetting of the generator 15 from which the alarm signal has just been transmitted, whilst the remaining generators 15 repeat their alarm signals. Consequently the alarm signal from the central generator 15 is now transmitted.
  • the central selector switch 8 and the corresponding generator 15 are reset, so that now the alarm signal from the top generator 15 is transmitted until the acknowledgement signal arrives again. Hence, the whole of the transmission of the alarm recording from one alarm signal emitter terminates.
  • a priority control ensures that, in the case of simultaneous response of a number of alarm signal emitters, their alarm recordings are transmitted one after another, for example by cyclic connection of the alarm signal emitters to the multi-frequency generator or generators.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
US06/019,497 1978-03-13 1979-03-12 Remote alarm installation Expired - Lifetime US4249036A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2810875A DE2810875C2 (de) 1978-03-13 1978-03-13 Fernalarmanlage
DE2810875 1978-03-13

Publications (1)

Publication Number Publication Date
US4249036A true US4249036A (en) 1981-02-03

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ID=6034319

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/019,497 Expired - Lifetime US4249036A (en) 1978-03-13 1979-03-12 Remote alarm installation

Country Status (7)

Country Link
US (1) US4249036A (fr)
JP (1) JPS5556298A (fr)
CH (1) CH640072A5 (fr)
DE (1) DE2810875C2 (fr)
FR (1) FR2420175A1 (fr)
GB (1) GB2016186B (fr)
SE (1) SE441130B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4392206A (en) * 1979-10-31 1983-07-05 Mitel Corporation Printer
US4442320A (en) * 1981-12-04 1984-04-10 Base Ten Systems, Inc. Remote subscriber interaction system
US4528423A (en) * 1981-12-04 1985-07-09 Base Ten Systems, Inc. Remote subscriber terminal unit
US4580010A (en) * 1983-08-25 1986-04-01 Motohiro Gotanda Building surveillance apparatus
US4641127A (en) * 1985-01-30 1987-02-03 Hogan Dennis R Security and fire protection system
US5386463A (en) * 1992-11-17 1995-01-31 Kings Iii Of America, Inc., North America Low noise multi-elevator communication system and method
US6034619A (en) * 1982-08-02 2000-03-07 Osborne; Paul Wray Digital alarm receiver for automated handling of data formats

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Publication number Priority date Publication date Assignee Title
DE3002410C2 (de) * 1980-01-24 1985-09-19 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Einrichtung für die selbsttätige Entgegennahme und Weitergabe von Alarm- und Gefahrenmeldungen durch eine Empfangsstelle
EP0033758B1 (fr) * 1980-02-04 1984-12-12 ANT Nachrichtentechnik GmbH Système d'appel d'urgence
US4342986A (en) * 1980-05-07 1982-08-03 Honeywell Inc. Central station alarm reporting system
JPS6165555A (ja) * 1984-09-05 1986-04-04 Mitsubishi Electric Corp ホームコントロールシステムおよびインターホンシステム
GB2194119A (en) * 1986-07-11 1988-02-24 Security Services Plc Status reporting apparatus
DE4009487A1 (de) * 1990-03-21 1991-09-26 Elmeg Kommunikationstech Fernsprechendgeraet mit mitteln zur abgabe eines alarmsignals auf die anschlussleitung
GB2278517A (en) * 1993-05-26 1994-11-30 Politel Limited Prioritising telephone apparatus
GB2330229A (en) * 1997-10-07 1999-04-14 Digital Detection Systems Limi Fluid detection system
GB2395392B (en) * 2002-07-13 2004-11-03 Tunstall Group Ltd Controlling a customer telephone line
USD1004124S1 (en) * 2020-12-11 2023-11-07 Orasure Technologies, Inc. Developer solution vial

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US3233232A (en) * 1961-12-21 1966-02-01 Brennon Ralph Samuel Delayed alarm system with coded location signal operable to alarm despite faults in signal transmission to remote station
US3582555A (en) * 1968-03-27 1971-06-01 Dasa Corp Telephone alarm system
US3594508A (en) * 1969-08-21 1971-07-20 Roger C Glidden Data reporting system

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JPS448803Y1 (fr) * 1965-04-24 1969-04-10
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US3987246A (en) * 1970-07-21 1976-10-19 Electromitor, Inc. Apparatus for automatically sending data over a telephone system from a remote station to a central station
DE2129161B2 (de) * 1971-06-11 1975-04-03 Roger Charles Wenham Mass. Glidden (V.St.A.) System zum uebertragen von zustandsmeldungen
DE2222707B2 (de) * 1972-05-09 1975-08-28 Horst 8504 Stein Hertle Verfahren und System zur Übertragung von Befehlen, Meldungen, Signalen und/oder Meßwerten
JPS51114003A (en) * 1975-03-31 1976-10-07 Taiko Denki Seisakusho:Kk Automatic information unit
FR2359554A1 (fr) * 1976-07-20 1978-02-17 Matra Procede et installation de transmission d'alarmes sur lignes telephoniques

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3233232A (en) * 1961-12-21 1966-02-01 Brennon Ralph Samuel Delayed alarm system with coded location signal operable to alarm despite faults in signal transmission to remote station
US3582555A (en) * 1968-03-27 1971-06-01 Dasa Corp Telephone alarm system
US3594508A (en) * 1969-08-21 1971-07-20 Roger C Glidden Data reporting system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4392206A (en) * 1979-10-31 1983-07-05 Mitel Corporation Printer
US4442320A (en) * 1981-12-04 1984-04-10 Base Ten Systems, Inc. Remote subscriber interaction system
US4528423A (en) * 1981-12-04 1985-07-09 Base Ten Systems, Inc. Remote subscriber terminal unit
US6034619A (en) * 1982-08-02 2000-03-07 Osborne; Paul Wray Digital alarm receiver for automated handling of data formats
US4580010A (en) * 1983-08-25 1986-04-01 Motohiro Gotanda Building surveillance apparatus
US4641127A (en) * 1985-01-30 1987-02-03 Hogan Dennis R Security and fire protection system
US5386463A (en) * 1992-11-17 1995-01-31 Kings Iii Of America, Inc., North America Low noise multi-elevator communication system and method

Also Published As

Publication number Publication date
SE441130B (sv) 1985-09-09
JPS5556298A (en) 1980-04-24
FR2420175B1 (fr) 1983-03-11
FR2420175A1 (fr) 1979-10-12
CH640072A5 (de) 1983-12-15
DE2810875C2 (de) 1982-11-18
DE2810875B1 (de) 1979-03-15
SE7901227L (sv) 1979-09-14
GB2016186A (en) 1979-09-19
GB2016186B (en) 1982-03-17

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